In some rare circumstances the D3 BUSY2 stayed on until UCM/KNX is reset. To fix this a reinitialisation timer of 4 minutes was added. This should not affect normal operation
Enabled audio for ucm/knx so aud01 can be connected on knx ucm for special applications
Allow upgrade to UCM/KNX2.
fixed problem of counter racing when KNX initiate counter change which is broadcast back to UCM/KNX again
